I made a aluminum baffle that I slip into the gap between the radiator and the seal (copied one someone had posted ) and it helps- can move the CHTs from 140s to 170s on a cold day like this weekend...

I have been flying my -12 here in Northern Illinois and Wisconsin for over 200 hrs (at times the temps well below freezing- like this morning when OAT at 5500 was 0 degrees F) and not one incident of...

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